A). οἴομαι Od. 10.193 , οἴοιτο 17.580 , 22.12 ), v. infr.:—the shortd. form οἶμαι is the one chiefly used in Trag., οἴομαι only in A. Ch. 758 , S. OC 28 ; but οἴομαι is freq. in Ar.( Eq. 407 , al.); Hdt. does not use either form ; in Att. Prose codd. vary, but οἶμαι prevails, and was exclusively used in parenthesis (v. infr. IV): impf. ᾠόμην A. Pr. 270 , Ar. V. 791 , etc.; also 1 pers. ᾤμην Id. Fr. 636 , etc.: fut. οἰήσομαι Lys. 30.8 , Pl. R. 397a , etc., later οἰηθήσομαι Gal. Opt.Doctr. 42 :— Ep. aor. ὠϊσάμην (v. infr.): aor. ὠΐσθην Od. 4.453 , 16.475 ; part. ὀϊσθείς Il. 9.453 ; Att. and Ion. aor. ᾠήθην Hp. VM 14 , Antipho 1.8 , Th. 4.130 , Pl. Tht. 178c , etc.; but rare in Com. and Trag., οἰηθῇς Ar. Eq. 860 , οἰηθείς, -εῖσα, Antiph. 194.2 , E. IA 986 ; also aor. inf. οἰήσασθαι Arat. 896 :— Act., Ep. pres. ὀΐω and οἴω, but only in 1 sg. (v. infr.); Lacon. οἰῶ Ar. Lys. 81 , 156 , 998 , Epil. 3 . [In the un contr. forms, Hom. uses ῑ in ὀΐομαι Il. 5.644 , ὀΐεαι 1.561 , Od. 10.380 , ὀΐεται 17.586 , ὀϊόμεθ’ 21.322 , 22.165 , ὀϊόμενος Il. 15.728 , Od. 2.351 , al.( οἰόμενος Call. Epigr. 8.2 ), ὠΐετο Od. 10.248 , ὀΐσατο 1.323 , 9.213 , 19.390 , ὀϊσάμενος 15.443 (but the v.l. ὀϊσσατο, ὀϊσσάμενος in Hom. can be supported by ὀϊσσάμενος A.R. 2.1135 , cf. Epic.Alex.Adesp. 2.41 , Arat. 1006 , by ὑποίζεσθαι (: ὑπονοεῖν) Hsch., and by ὠῐσάμην A.R. 1.291 , ὠΐσατο [ῐ] Mosch. 2.8 , etc.); Act. pres. ὀΐω has ῑ when it stands at the end of a line, also in Od. 19.215 (in fourth foot), 18.259 (before caesura in third foot); but ῐ in Il. 1.558 , 13.153 , 23.467 , etc.; οἴω as disyll. is always at the end, exc. in 15.298 , 21.533 , 23.310 .]:—forebode, presage, c. acc., κῆρας ὀϊομένῳ Il. 13.283 ; γόον δ’ ὠΐετο θυμός Od. 10.248 ; expect, ἐελδομένοισι μάλ’ ἡμῖν, οὐδ’ ἔτ’ ὀϊομένοισι 24.401 ; suspect, ἤ τι ὀϊσάμενος, ἢ καὶ θεὸς ὣς ἐκέλευσεν 9.339 ; ἦ τινά που δόλον ἄλλον ὀΐεαι 10.380 ; fear, κατὰ θυμὸν ὀΐσατο, μή ἑ λαβοῦσα οὐλὴν ἀμφράσσαιτο 19.390 ; τῷ ἑπόμην .. , ὀϊόμενός περ, ἀνάγκῃ 14.298 : abs., αἰεὶ μὲν ὀΐεαι, οὐδέ σε λήθω thou art ever suspecting, Il. 1.561 ; πατὴρ δ’ ἐμὸς αὐτίκ’ ὀϊσθεὶς πολλὰ κατηρᾶτο 9.453 , cf. Od. 15.443 : folld. by ὡς, καὐτὸς ὀΐεαι ὥς κεν ἐτύχθη you can guess how it would have happened, 3.255 , cf. 17.586 : c. acc. et fut. inf., ὀΐομαι ἄνδρα χολωσέμεν Il. 1.78 ; ἅ τιν’ οὐ πείσεσθαι ὀΐω ib. 289 , cf. 5.252 , 284 , al.; τὸ καὶ τελέεσθαι ὀΐω 1.204 ; ἀλλ’ οὐ νῦν ἐρύεσθαι ὀΐομαι 20.195 : c. acc. et pres. inf., referring to present time, οὐδέ τι θυμῷ ὠΐσθη δόλον εἶναι Od. 4.453 , cf. 10.232 ; ὀΐσατο γὰρ θεὸν εἶναι 1.323 ; τῶ δ’ ὀΐω κείνης τάδε πάσχειν ἐννεσίῃσιν Il. 5.894 : c. acc. et aor. inf., referring to past time, τῇ δ’ ὀΐω κατανεῦσαι 1.558 , cf. Od. 3.27 , al.: the subj. of the inf. must freq. be supplied from the context, διωκέμεναι γὰρ ὀΐω I fear [they] are pursuing me, 15.278 , cf. 1.201 , 12.212 , Il. 12.66 ,al.: c. inf. alone, when both Verbs have the same subject, as κιχήσεσθαι δέ δ’ ὀΐω I think I shall catch you, 6.341 ; mean, intend, c. fut. inf., οὐ γὰρ ἔγωγ’ ἔτι σοὶ πείσεσθαι ὀΐω 1.296 , cf. 170 , Od. 19.215 : c. pres. inf., οὐ γὰρ ὀΐω ἀνδρῶν δυσμενέων ἑκὰς ἱστάμενος πολεμίζειν Il. 13.262 .

II). impersonal, only Od. 19.312 , ἀλλά μοι ὧδ’ ἀνὰ θυμὸν ὀΐεται there comes a boding into my heart.

III). think, suppose, believe, freq. in Hom., as Il. 1.59 , 5.644 , etc.; οἶμαι βοὴν ἄμικτον ἐν πόλει πρέπειν A. Ag. 321 ; οἶμαι γάρ νιν ἱκετεύσειν (ἱκετεῦσαι codd.) E. IA 462 ; κτήσεσθαι (-σασθαι codd.) Lys. 12.19 ; διαπράξεσθαι (-ξασθαι codd.) Id. 13.53 ; ἤδη γὰρ αὐτοὺς οἴομαι δεδειπνάναι Ar. Fr. 464 ; opp. εἰδέναι, Pl. R. 506c4 ; οἴονται, ἴσασι δ’ οὐδέν Arist. Rh. 1389b17 , cf. APo. 75a15 : folld. by ὅτι .. , Plu. 2.90b :— Pass., μάρτυρας δύο παρεχέτω ὀμνύντας οἰόμενον that he is the putative father, Schwyzer 784a (Tenos, iv B. C.).

IV). parenthetically, mostly in first person, ἐν πρώτοισιν, ὀΐω, κείσεται among the first, I ween, will he be lying, Il. 8.536 ; ἔπειτά γ’, ὀΐω, γνώσεαι Od. 16.309 , cf. Il. 13.153 , Od. 2.255 , etc.: in Hom. only in act. form ὀΐω, exc. ὀΐομαι Od. 22.140 , and perh. 14.363 , cf. A. Ch. 758 ; in Att. this parenthetic use is prob. confined to the shorter form οἶμαι, impf. ᾤμην ; rarely in other persons than the first, as οὐκ οἴει ἀναγκασθήσεται; Pl. R. 486c , cf. Tht. 147b ; πόσης οἴεσθε γέμει σωφροσύνης; Id. Smp. 216d .

2). expressive of modesty or courtesy, to avoid over-great bluntness of assertion, Id. Grg. 483c , X. Cyr. 1.3.11 , etc.: even between a Prep. and its case, ἐξ οἶμαι τῆς ἀκροτάτης ἐλευθερίας Pl. R. 564a ; ἐν οἶμαι πολλοῖς D. 20.3 ; or between Art. and Subst., οἱ γὰρ οἶμαι βέλτιστοι Id. 54.38 .

V). answering a question, I think so, I should think so, Ar. Ach. 919 , etc.; νὴ τὸν Ἡρακλέα, οἶμαί γε Id. Th. 27 ; οἶμαι ἔγωγε Pl. Cri. 47d , etc.; οἴεσθαί γε χρή one must think so, it would seem so, Id. Prt. 325c , Cri. 53d , Phd. 68b , Grg. 522a .

VI). Att. phrases:

1). πῶς οἴει; you can't think how, to add force, like πῶς δοκεῖς ; πόθος τὴν καρδίαν ἐπάταξε πῶς οἴει σφόδρα Ar. Ra. 54 .

2). οἴομαι δεῖν I think it my duty, think fit, hence sts., intend, purpose, λέγειν οἴεται δεῖν ποιεῖν δεινούς his object is to train orators, Pl. Men. 95c , cf. 86b , Tht. 207e ; βδελυρὸς καὶ ὑβριστὴς ᾤετο δεῖν εἶναι D. 21.143 ; τοὺς ἐχθροὺς ἀμυνόμενοι τεθνάναι δεῖν ᾤοντο Id. 60.31 , cf. Pl. Prt. 316c , X. An. 2.6.26 , Mem. 4.6.3 , 6 ;[ὁ ἀκόλαστος] οἰόμενος δεῖν [διώκει τὰ ἡδέα] intentionally, Arist. EN 1152a6 , cf. 1136b8 , Pl. Hipparch. 225b ; but οἴομαι δὲ δεῖν οὐδέν methinks there is no need, S. OC 28 ; and in Pl. Alc. 2.144d ἆρ’ οὐκ ἀναγκαῖον .. οἰηθῆναι δεῖν .. ἡμᾶς εἰδέναι ἢ τῷ ὄντι εἰδέναι; must we not either think we know or really know?(δεῖν being superfluous).

3). οἴομαι without δεῖν I mean to, intend, οὐκ οἴει .. δοῦναι δίκην ; Lys. 12.26 , cf. Pl. Criti. 62d , Ly. 200b , Ep. 324b ; οὐ βαλεῖν ( v.l. βάλλειν ). . ᾠήθη Arist. EN 1135b14 , cf. 1172a7 .